Method for power distribution and antenna selection of distributed type antenna mobile communication system

Abstract

The invention relates to a method for power distribution and antenna selection in a distributed type antenna system, which is a technology used for allocating power and an antenna resource of a mobile communication distributed type antenna system. When a mobile terminal moves in the coverage range of a wireless signal of the distributed type antenna system, a base station realizes a process of quickly selecting antennas according to the strength of the wireless signal of the mobile terminal received each antenna by directly carrying out transmitting power configuration on the antennas with better channel condition, and the switching of the mobile terminal and the enhancement of the power efficiency of the system are realized by the base station in the system in a simple method. The method for power distribution and antenna selection in the distributed type antenna system has the basic rule that the mobile terminal is always communicated with the antennas with better channel condition aiming at the coverage range of different antennas in a coverage subdistrict of the wireless signal of the distributed type antenna system, the whole process of selecting the antennas is completed in the base station from the measurement and judgment of the wireless signal to the execution of the transmitting power configuration, and a signal transmission process is not needed.

Description

technical field [0001] The invention relates to a method for base station transmission power configuration and antenna resource allocation in a mobile communication system, which belongs to the field of wireless resource management research in the mobile communication system. Background technique [0002] With the wide application of Multiple Input and Multiple Output (MIMO) technology in mobile communication systems, centralized multi-antenna systems and distributed multi-antenna systems have become typical wireless network structures in mobile communication systems. In order to effectively use the multi-antenna resources in the mobile communication system, the collaborative technology is used between the centralized or distributed multi-antennas in the system to improve the system spectrum utilization and power efficiency, and the multi-antennas are placed reasonably to form a repeater antenna system to compare Various new wireless network structures, such as high power ef...

AI Technical Summary

Problems solved by technology

[0003] In traditional mobile communication system radio resource management methods, handover methods are usually used to complete the antenna selection of the base station, such as hard handoff (Hard Handoff) and soft handoff (Soft Handoff) based on mobile terminal received signal strength measurement, station selection transmit diversity handover (Site Selection Diversity Transmit), etc. These handover methods use the mobile terminal to measure the received wireless signal strength as the handover parameter, and need to inform the base station to complete the corresponding handover task through the signaling interaction of the upper layer. The measurement process of the mobile terminal and the multiple signal The high complexity and transmission delay switching method brought by order transfer will not be applicable to multi-antenna mobile communication systems

[0004] The traditional antenna selection methods mainly include selecting the transmitting and receiving antennas in a centralized multi-antenna system according to the wireless channel status of each antenna to reduce the number of radio frequency units and improve the performance of airspace correlation, which cannot be applied to the situation caused by different placement methods of multiple antennas. Antenna selection requirements in the wireless network structure of the mobile communication system

Images